True. The latest financial report from Visa [1] says 164.7B transactions in 2021, or ~5,000 per second. This number is 3x larger! Mastercard is slightly smaller, but comparable at 140B [2].

[1] https://annualreport.visa.com/financials/default.aspx

[2] https://s25.q4cdn.com/479285134/files/doc_financials/2022/q2...